Q: What are the prime factors of the number 181,376,888?

 A: 2, 7, 11, 19, 15497

Why are those the prime factors of the number 181,376,888?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 181,376,888

181,376,888
Factor Arrows
290,688,444
Factor Arrows
245,344,222
Factor Arrows
222,672,111
Factor Arrows
73,238,873
Factor Arrows
11294,443
Factor Arrows
1915,497

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 7, 11, 19, 15497

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 11 x 19 x 15,497 = 181,376,888

This can also be written as 23 x 71 x 111 x 191 x 15,4971 = 181,376,888

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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